Precision micrometer seating die for 40 S&W and 10mm ammunition. Stainless steel construction resists corrosion. Fine-adjustment capability for consistent bullet seating depth across all your reloads.
The Lyman Pro Micrometer Seating Die represents a significant step forward in reloading precision. This die is engineered specifically for shooters who demand consistency and repeatability in their ammunition.
Bullet seating depth is one of the most critical variables in handload development. Even small variations can affect pressure, velocity, and accuracy. The micrometer design on this Lyman die allows you to set your seating depth once and reproduce it with confidence on every round.
The stainless steel construction ensures your investment remains protected from the corrosive effects of primers and powder residue—a practical advantage that extends the life of your reloading equipment.
Whether you're developing loads for competition, hunting, or general practice, this seating die delivers the precision control serious reloaders expect.